532 



and the pleon. Pereopods VII have a full complement of segments; the 

 distal part is shorter than the 2nd segment and sometimes bent upward. 

 The pleon is massive, its height less than that of the middle somites of 

 the pereon. The urosome is shorter than the pleon and about 1/6-1/5 the 

 total body length. The geminate somite is much longer than its width. 

 The rami of all the uropods are free. The basipodite of uropods I extends 

 beyond the base of the telson. Uropods II are shorter than uropods I and 

 uropods III the shortest: the basipodite and rami are approximately equal 

 in length and the tips of the rami do not reach the tip of the telson. The 

 telson is narrowly triangular and fused with the urosome. 

 Type species: Cranocephalus goesi BowaWius, 1890. 



1. Cranocephalus scleroticus (Streets, 1878) (Fig. 230) 



Streets, 1878: 281 (Oxycephalus); Bovallius, 1880: 98 (Steb- 

 bingella); Shoemaker, 1945a: 251; Page, 1960: 72; Pillai, 1966: 

 \U\—typhoides Claus, 1879b: 195 {Oxycephalus); 1887: 72 {Oxy- 

 cephalus); Bovallius, 1890: 100 {Stebbingella); Stephensen, 1925a: 

 199 {Stebbingella); Spandl, 1927: 193 {Stebbingella). — goesi Bovallius, 

 1890: 95.— r/iee/» Bovallius, 1890: 101 {Stebbingella). 



Length of sexually mature crustaceans varies from 5.8 to 17 mm 

 and even 21 mm. 



The head in smaller specimens narrows sharply toward the rostrum, 

 which constitutes less than half the entire head length; in larger specimens 

 the transition to the rostrum is smooth and the rostrum itself is relatively 

 longer than the proximal part of the head occupied by the eyes. 



The first and last somites of the pereon are approximately equal in 

 height to the head, the middle somites appreciably higher, especially in 

 females in which the pereon is massive due to the strong broadening 

 of the 2nd segment of pereopods V-VII. In pereopods II-IV the anterior 

 margin of the coxal plates projects roundly, while that in pereopods V 

 projects roundly on both sides and is armed in the middle with a sharp 

 pointed process directed backward. The 2nd segment of pereopods I is 

 bulged on both sides and equal in length to the rest of the leg; the 

 5th segment is wider than its length, the posterior distal angle slightly 

 stretched into a pointed denticulate process, and the anterior distal angle 

 projects; the 6th segment has a strongly bulged anterior margin; the 

 claw is slightly curved. The 2nd segment of pereopods II has barely 

 bulged margins; the 5th segment is approximately equal in length and 

 width and the distal projection of the posterior margin denticulate in 

 larger individuals but smooth in younger ones; the 6th segment has a 

 431 barely bulged anterior margin and its length is twice its width. The 2nd 

 segment of pereopods V is broader, the anterior margin barely bulged, 

 the posterior margin distally with a rounded projection, the proximal part 

 also roundly projecting, and the maximum width of the segment occurs in 



